I can see that there is a function (EbNo_to_noise_voltage) responsible
for that but I have problem with understanding where this equation came
from. Could you possibly explain it to me or at least recommend some
book where I can find the solution?

I can see that there is a function (EbNo_to_noise_voltage)
responsible for that but I have problem with understanding where
this equation came from. Could you possibly explain it to me or at
least recommend some book where I can find the solution?

Given an E_b of 1, what is the noise voltage (i.e. the expected
amplitude of the AWGN process) that will cause an E_b / N_0 of x, if E_b
/ N_0 is given in dB?
If you take pencil and paper, and solve for the noise voltage, you’ll
get this equation.

MB

–
Karlsruhe Institute of Technology (KIT)
Communications Engineering Lab (CEL)

Given an E_b of 1, what is the noise voltage (i.e. the expected
amplitude of the AWGN process) that will cause an E_b / N_0 of x, if E_b
/ N_0 is given in dB?
If you take pencil and paper, and solve for the noise voltage, you’ll
get this equation.

Thank you very much for your reply. I am capable of simple converting
value
in [dB] to the one in [W/W] but I don’t know why there are the
number_of_bits_per_symbol parameter and the ‘2’ constant in the
equation.
It’s probably trivial but I would really appreciate your help on this.

On Mon, Dec 09, 2013 at 03:10:49AM -0800, bieniu wrote:

It’s probably trivial but I would really appreciate your help on this.
The number_of_bits_per_symbol is for E_s -> E_b conversion and the 2 is
for two-sided noise power to one-sided conversion (or was is the other
way 'round? I always mix those up :).

MB

–
Karlsruhe Institute of Technology (KIT)
Communications Engineering Lab (CEL)